Suppose a normal distribution has a mean of 50 and a standard deviation of 3. What is P(x <47)?
A. 0.16
B. 0.025
C. 0.975
D. 0.84

Which of the following would be a reasonable estimate for the weight of a pencil? a. 1 × 10^-20 lb b. 1 × 10^20 lb c. 1 × 10^2 lb d. 1 × 10^-2 lb

The triangle shown has a hypotenuse with a length of 13 feet. the measure of angle a is 20 degrees. and the measure of angle b is 70 degrees. which of the following is closest to the length, in feet, of line segment ac? no need to use a calculator to find the trig numbers. each function is listed below. 4.4 5 12.2 35.7

Which of the following statements would be sufficient to prove that parallelograms pqrs is a rectangle ?